[c#] passing a object[] to a params object[] not working

Question

Hi,

I've read the topic about passing an object[] to a params object[] but I don't know why it's not working with me.

I have these too functions in a class:

...
    private void CallbackEvent(object source, CallbackEvetArgs e) { // Some event with e.Data as string
    ...
        string[] values = e.Data.Split('|');
        DoSave("save", values.Skip(1).Cast<object>().ToArray());
    ...
    }
...
    public void DoSave(string action, params object[] values) {
    ...
        string value1 = values[0];
    ...
    }
...

but instead of receiving an string in value1, value1 is receiving the whole array (string[]) and therefore an invalid casting exception.

What am I doing wrong?

Answer 1

C# (.NET in general) arrays are covariant. You can simply pass the string[] to an object[] parameter.

DoSave("save", values.Skip(1).ToArray());

The code you posted is definitely not the exact code you tested. Cast<object> should also work correctly. This line shouldn't compile:

string value1 = values[0]; // object -> string, no implicit conversion.

Please post the exact code causing the problem.